When you add a license you record how many seats you own and how many are actually used or assigned. The tool annualizes the cost (a monthly price ×12, an annual price as-is, a one-time cost as no ongoing annual spend) and, when the cost is entered per seat, multiplies it by the seats owned to get the line’s annual cost. Utilization is seats used ÷ seats owned, shown as a colored bar, and the wasted spend is the unused seats × the per-seat annual cost. Across the whole portfolio it sums the total annual spend, the total wasted spend and a seat-weighted average utilization, and you can sort the license table by wasted dollars so your biggest over-licensed lines — the shelfware quietly inflating your SaaS bill — appear first. Studies routinely find roughly half of SaaS seats go unused, so this is usually where the savings are.

The Software License Audit runs completely client-side. Every license you add and every calculation — utilization, wasted spend, compliance flags, renewals and by-vendor spend — happens in your browser, and the inventory is stored in localStorage on your device. Nothing is sent to a server, there is no account or login, no API and no CDN call for your data, and the tool keeps working offline once the page is cached. That is the deliberate contrast with cloud SAM and SaaS-management platforms, which require you to hand over your full software inventory and commercially sensitive vendor pricing. Because your data stays on the device, this tool is safe for confidential cost and contract figures; only the CSV you choose to export ever leaves the page, so export one regularly as a backup since clearing your browser data erases the inventory.

Over-licensed (seats owned > seats used) is pure overspend: you are paying for idle seats, so the fix is to downgrade or drop those seats at renewal, and the tool flags the wasted seats and the annual dollars they cost. Under-licensed (seats used > seats owned) is the riskier case: you are consuming more than your entitlement, which is a non-compliance gap a vendor can discover in a software audit and bill as a true-up, frequently at list price plus penalties and back-maintenance. The tool flags those lines in red with the number of seats you are over so you can buy the missing seats proactively, on your own terms, rather than under audit pressure. Because the numbers are your manual inputs, confirm the exact entitlement in your contract and the actual usage in the vendor admin portal before acting.

Each license carries a renewal or expiry date, and the dashboard buckets your licenses into overdue, 0–30, 31–60 and 61–90 days from today’s date (read from your device clock) so an auto-renew never catches you by surprise and you have time to negotiate. However, this is a manual inventory: it is not connected to your billing system, SSO, finance tools or any discovery / SAM agent, so it cannot auto-detect installs, measure real usage or push notifications. Treat the renewal buckets and flags as a prompt to act — then verify the dates and seat counts against your actual contracts and vendor portals before you renew, cancel or true up. Export the inventory and audit-summary CSV to keep a backup and to share the findings with finance or procurement.